package com.woniuxy.oldmanapi.mapper;

import com.woniuxy.oldmanapi.entity.Building;
import org.apache.ibatis.annotations.Select;
import org.springframework.stereotype.Repository;
import tk.mybatis.mapper.common.Mapper;
@Repository
public interface BuildingMapper extends Mapper<Building> {
    @Select("select count(*) from building ")
    int selectNum();
}